/Engine/Source/Editor/SubobjectDataInterface/Public/SubobjectDataSubsystem.h
Remove the child subobject from the owner
True if the child was successfully removed.
bool DetachSubobject ( const [FSubobjectDataHandle](API\Editor\SubobjectDataInterface\FSubobjectDataHandle) & OwnerHandle, const [FSubobjectDataHandle](API\Editor\SubobjectDataInterface\FSubobjectDataHandle) & ChildToRemove )